Projectile.



' R.'A. MOORE.

PROJECTILE.

APPLICATION HLED DEC- 5, 914.

Patented Mar. 21,1916.

25 and facilitating the rotation of the shell.

, UNITED STATES PATENT OFFICE.

nonnn'r ALEXANDER moons, or new YORK, N. 'Y., assien'on or ous-sxxrn 'ro enonen m. nnnns, ONE-SIXTH TO WILLIAM E. LOWN, am) oun-six'rn T0 FLOYD 3. WILSON, ALL OF-NEW YORK, N. Y.

PROJECTILE.

Application filed December 15,

of this inventipn has been to produce a new type of projectile especially designed for use in connection what is generally known as rifles constituting heavy ordnance.

In the carrying out of the invention I have employed as essential parts of my projectile construction a body or core preferwith large caliber guns or ably though not necessarily solid in form,

v or water.

'the same being surrounded and entirely inclosed by a shell capable of rotation thereon; As an essential feature of my invention 1' contemplate the formation of the body of the projectile and the .casmg or inclosing shell therefor, in such a manner that these parts are spaced from one another reducing the friction between the same to a minimum Mv invention includes also, broadly, the

and a liquid filling the space intermediate said parts, said liquid being preferably oil Subsidiary to the foregoing is the employment of the same parts with the interposed liquid contained therebetween. and the shell capable of rotation about the body or core.

. Still another feature of the invention resides in the provision of a peculiar formation of point for the projectile, facilitating its rotation when projected'into space; also the provision of a special formation of butt end for the projectile designed in such a way as to peculiarly confine the gases of the explosion utilized to fire the implement of war whereby the power of said gases may be concentrated to produce the greatest possible projecting effect upon the pro ectile.

Having in view the foregoing objects, I, therefore, do not wish to be limited to the special construction of my invention as is hereinafter presented in detail, and as fully shown in the accompanying drawings, wherein- Figure 1 is a side view of a projectile Specification of Letters Patent,

between the walls of formed with the annular longitudinal cen Patented Mar. 21, 1916.

191a Serial No. 877,312.

embodying the essential features of said in vention. Fig. 2 is a vertical longitudinal sectional view of thehsame on the line 2-2 of Fig. 1.

Mv projectile is comparatively simple in its structure comprising shell or casing 1 pointed or tapered at one- ,end. The said shell 1 incloses the body orcore 2 illustrated as,solid1mdspacedirem the shell as shown at 3. Intermediate the as it does the outer front end portions of the body 2 and the ca shell 1 are the ball bearings4 and 5 whiclf operate in suitable recesses formed in the respective parts. 1 preferably so form dles 6 and 6' project from the body, the ball bearings-5 being interposed a socket in the extremitv of the shell 1, and said spindle 6. and other ball bearings 7 between the walls of the other socket of 6'. The rear end the body 2 that spinof the spindle 6 termi- .nates short of the rear end of the socket receiving the same leaving a space seen clearly in Fig. 2

, In brief, it will be apparent from the 80 shell 1 is capable of rotatina on the body 2 there being antifriction bearings between the parts. The rear end wall of the chamber, which' is formed through the factthat the shell 1 is hollow, is provided with a number of concentric grooves 3 constituting liquid chambers in the same manner that'the space 3 constitutes a corresponding chamber for oil, water, or the like. I

The butt 8 of the project"e constitutes an integral extension of the shell 1 and is concavities 9 and 10 as well as a rearmost round projection The concavities 9 and 10 are such that on the explosion projectile will be fired from a gun the gases generated will be caused to rush into the concavities and being directed toward the 'tral axis of the projectile will produce a 'maximum effect so far as projecting power is concerned tocarry the proiectile the greatest possible distance. The interposition of the -oil or water between the shell 1 and the body QEofthe r jectile is advantageous in facilitating not only the rotation-of'the shell 1 on the body but in affording aninsulation film reducing foregoing that the ends of said the shell and the spindle i of the charge by which the i the shell 1 about the body 2. Since the rear '1 end of the body 2 abuts with the rear end wall of the chamber in which said body is inclosed no strain and consequent distortion of the bearings =1 and 5 and 7 is likely to be created by the sudden movement of the projeetile when fired from a. weapon.

Having thus described my invention, What I claim as new is:

1. A projectile comprising in combination a solid body, a rotatable shell surrounding the body in spaced relation thereto, bearings intermediate said parts permitting rotation of the shell on the body, 'and a film of liquid intermediate the shell and body and consisting of a body of oil for lubricating. the bearings and acting as an insulating barrier.

2. A. projectile comprising a body-,a shell wholly inclosing said body and formed with a penetrating point and a butt at the other end, bearings intermediate said shell and body spacing the same apart at thelsides thereof. 'the shell being provided with a liquid film intermediate the same and the body at the'sides of the latter and intermediate said parts at their rear'ends, said shell having its rear inner wall formed with concentric grooves forniing lubricant races r01- facilitating rotation of the shell. 7

3. A projectile provided with a penetrating point at one end and a butt at the opposite end, said butt being :fiormed with concentric annular concavities, the surface of the butt portion being convex adjacent to the concavities whereby to concentrate propelling gases acting on the projectile toward the, central longitudinal axis ofsaid projectile.

4. A projectile comprising a body, a shell rotatable about said body, the shell being formed with spiral grooves adjacent to its point for imparting rotation to the shell. upon projection from a gun, and a liquid lubricant disposed intermediate the body and the shell for facilitating rotation of the shell under actuation by the grooves aforesaid. said lubricant constituting an insulatfor imparting rotation thereto, and means at its other end for concentrating the gases acting upon said end in the discharge of the projectile toward the central longitudinal axis of said projectile and substantially eliminatin suction or vacuum from the rear of the projectile while in flight, said-means consisting of annular groo 'es cut into the shell in a direction forwardlv of its lon itudiiial axis, the 'surfacecontiguous to the grooves rounding outwardly thereby 'forming reverse curves.

In testimony vvh rent I aiiix m'ysignature in presence of two "witnesses.

ROBERT ALEXANDER MOORE.

, Witnesses: 4

WILLIAM E. LOWN, FnoYn'B. WILSON. 

